I have never understood the thinking behind wanting a team to avoid a move they believe can truly help them, based only on concerns that some other team in the division might benefit from it. In this case, if the Skins get an offer from the Eagles they love, I'd hope they would feel the same way.
Let them have Mariota if they make us an offer that can really help us. If he's great, he's great. We play them twice a year, just like we played them when they had McNabb, Cunningham, Jaws, whoever. And like we played Dallas against Staubach, Aikman, Romo. And the Giants against Simms, Eli, whoever. Division games are always close, and every year it seems they split the two games. There are exceptions of course, but not to the point I'd ever let my personnel decisions be decided solely on the basis of one player. Not even a QB.
If the move to get our own team helps us become good again in our own right, I'll take our chances in open competition against anybody.
Oh ... and also, I'm not all that sold on Mariota being anywhere close to a sure thing.